<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
login登陆页
<form action="/loginUser" method="post">
    <input type="text" name="username"><br/>
    <input type="password" name="password"><br/>
    <input type="submit" value="登陆">
</form>
</body>
</html>